Irish Joint Section

The Irish Joint Section was a joint MI5-MI6 unit which operated in Northern Ireland in the 1970s and 1980s.

From 1971 to 1972, primacy appeared to be with MI6 under Frank Steele. In May 1972, the Director General of MI5 and the Head of MI6 agreed to establish an Irish Joint Section (IJS) for the purpose of co-ordinating the operations and intelligence distribution of both bodies. The post of Director of Intelligence at Army HQ was abolished and a new post of Director and Coordinator of Intelligence with an office in Stormont was created. This post was given to an MI5 officer, and from that time on the number of MI5 personnel increased, with a corresponding decrease in MI6 presence. For example, the DCI’s representative at Army HQ was Craig Smellie of MI6. When he left Northern Ireland in 1975, he was replaced by Ian Cameron, an MI5 officer.

The Irish Joint Section continued to exist until 1984, when MI5 took sole responsibility for operations.[1]